static void sp_grd_ed_del_stop(GtkWidget */*widget*/, GtkWidget *vb)
{
SPGradient *gradient = static_cast<SPGradient *>(g_object_get_data(G_OBJECT(vb), "gradient"));
SPStop *stop = get_selected_stop(vb);
if (!stop) {
return;
}
if (gradient->vector.stops.size() > 2) { // 2 is the minimum
// if we delete first or last stop, move the next/previous to the edge
if (stop->offset == 0) {
SPStop *next = stop->getNextStop();
if (next) {
next->offset = 0;
sp_repr_set_css_double(next->getRepr(), "offset", 0);
}
} else if (stop->offset == 1) {
SPStop *prev = stop->getPrevStop();
if (prev) {
prev->offset = 1;
sp_repr_set_css_double(prev->getRepr(), "offset", 1);
}
}
gradient->getRepr()->removeChild(stop->getRepr());
sp_gradient_vector_widget_load_gradient(vb, gradient);
update_stop_list(GTK_WIDGET(vb), gradient, NULL);
DocumentUndo::done(gradient->document, SP_VERB_CONTEXT_GRADIENT,
_("Delete gradient stop"));
}
}
static void sp_grd_ed_add_stop(GtkWidget */*widget*/, GtkWidget *vb)
{
SPGradient *gradient = static_cast<SPGradient *>(g_object_get_data(G_OBJECT(vb), "gradient"));
verify_grad(gradient);
SPStop *stop = get_selected_stop(vb);
if (!stop) {
return;
}
Inkscape::XML::Node *new_stop_repr = NULL;
SPStop *next = stop->getNextStop();
if (next == NULL) {
SPStop *prev = stop->getPrevStop();
if (prev != NULL) {
next = stop;
stop = prev;
}
}
if (next != NULL) {
new_stop_repr = stop->getRepr()->duplicate(gradient->getRepr()->document());
gradient->getRepr()->addChild(new_stop_repr, stop->getRepr());
} else {
next = stop;
new_stop_repr = stop->getPrevStop()->getRepr()->duplicate(gradient->getRepr()->document());
gradient->getRepr()->addChild(new_stop_repr, stop->getPrevStop()->getRepr());
}
SPStop *newstop = reinterpret_cast<SPStop *>(gradient->document->getObjectByRepr(new_stop_repr));
newstop->offset = (stop->offset + next->offset) * 0.5 ;
guint32 const c1 = stop->get_rgba32();
guint32 const c2 = next->get_rgba32();
guint32 cnew = sp_average_color(c1, c2);
Inkscape::CSSOStringStream os;
gchar c[64];
sp_svg_write_color(c, sizeof(c), cnew);
gdouble opacity = static_cast<gdouble>(SP_RGBA32_A_F(cnew));
os << "stop-color:" << c << ";stop-opacity:" << opacity <<";";
newstop->getRepr()->setAttribute("style", os.str().c_str());
sp_repr_set_css_double( newstop->getRepr(), "offset", (double)newstop->offset);
sp_gradient_vector_widget_load_gradient(vb, gradient);
Inkscape::GC::release(new_stop_repr);
update_stop_list(GTK_WIDGET(vb), gradient, newstop);
GtkWidget *offspin = GTK_WIDGET(g_object_get_data(G_OBJECT(vb), "offspn"));
GtkWidget *offslide =GTK_WIDGET(g_object_get_data(G_OBJECT(vb), "offslide"));
gtk_widget_set_sensitive(offslide, TRUE);
gtk_widget_set_sensitive(GTK_WIDGET(offspin), TRUE);
DocumentUndo::done(gradient->document, SP_VERB_CONTEXT_GRADIENT,
_("Add gradient stop"));
}
static void verify_grad(SPGradient *gradient)
{
int i = 0;
SPStop *stop = NULL;
/* count stops */
for ( SPObject *ochild = gradient->firstChild() ; ochild ; ochild = ochild->getNext() ) {
if (SP_IS_STOP(ochild)) {
i++;
stop = SP_STOP(ochild);
}
}
Inkscape::XML::Document *xml_doc;
xml_doc = gradient->getRepr()->document();
if (i < 1) {
Inkscape::CSSOStringStream os;
os << "stop-color: #000000;stop-opacity:" << 1.0 << ";";
Inkscape::XML::Node *child;
child = xml_doc->createElement("svg:stop");
sp_repr_set_css_double(child, "offset", 0.0);
child->setAttribute("style", os.str().c_str());
gradient->getRepr()->addChild(child, NULL);
Inkscape::GC::release(child);
child = xml_doc->createElement("svg:stop");
sp_repr_set_css_double(child, "offset", 1.0);
child->setAttribute("style", os.str().c_str());
gradient->getRepr()->addChild(child, NULL);
Inkscape::GC::release(child);
return;
}
if (i < 2) {
sp_repr_set_css_double(stop->getRepr(), "offset", 0.0);
Inkscape::XML::Node *child = stop->getRepr()->duplicate(gradient->getRepr()->document());
sp_repr_set_css_double(child, "offset", 1.0);
gradient->getRepr()->addChild(child, stop->getRepr());
Inkscape::GC::release(child);
}
}
static void offadjustmentChanged( GtkAdjustment *adjustment, GtkWidget *vb)
{
if (!blocked) {
blocked = TRUE;
SPStop *stop = get_selected_stop(vb);
if (stop) {
stop->offset = gtk_adjustment_get_value (adjustment);
sp_repr_set_css_double(stop->getRepr(), "offset", stop->offset);
DocumentUndo::maybeDone(stop->document, "gradient:stop:offset", SP_VERB_CONTEXT_GRADIENT,
_("Change gradient stop offset"));
}
blocked = FALSE;
}
}
/*
* User changed the offset
*/
static void gr_stop_offset_adjustment_changed(GtkAdjustment *adj, GObject *tbl)
{
if (blocked) {
return;
}
blocked = TRUE;
SPStop *stop = get_selected_stop(GTK_WIDGET(tbl));
if (stop) {
stop->offset = gtk_adjustment_get_value(adj);
sp_repr_set_css_double(stop->getRepr(), "offset", stop->offset);
DocumentUndo::maybeDone(stop->document, "gradient:stop:offset", SP_VERB_CONTEXT_GRADIENT,
_("Change gradient stop offset"));
}
blocked = FALSE;
}
static void sp_gradient_vector_color_changed(Inkscape::UI::SelectedColor *selected_color, GObject *object)
{
(void)selected_color;
void* updating_color = g_object_get_data(G_OBJECT(object), "updating_color");
if (updating_color) {
return;
}
if (blocked) {
return;
}
SPGradient *gradient = static_cast<SPGradient*>(g_object_get_data(G_OBJECT(object), "gradient"));
if (!gradient) {
return;
}
blocked = TRUE;
SPGradient *ngr = sp_gradient_ensure_vector_normalized(gradient);
if (ngr != gradient) {
/* Our master gradient has changed */
sp_gradient_vector_widget_load_gradient(GTK_WIDGET(object), ngr);
}
ngr->ensureVector();
/* Set start parameters */
/* We rely on normalized vector, i.e. stops HAVE to exist */
g_return_if_fail(ngr->getFirstStop() != NULL);
SPStop *stop = get_selected_stop(GTK_WIDGET(object));
if (!stop) {
return;
}
SelectedColor *csel = static_cast<SelectedColor *>(g_object_get_data(G_OBJECT(object), "cselector"));
SPColor color;
float alpha = 0;
csel->colorAlpha(color, alpha);
sp_repr_set_css_double(stop->getRepr(), "offset", stop->offset);
Inkscape::CSSOStringStream os;
os << "stop-color:" << color.toString() << ";stop-opacity:" << static_cast<gdouble>(alpha) <<";";
stop->getRepr()->setAttribute("style", os.str().c_str());
// g_snprintf(c, 256, "stop-color:#%06x;stop-opacity:%g;", rgb >> 8, static_cast<gdouble>(alpha));
//stop->getRepr()->setAttribute("style", c);
DocumentUndo::done(ngr->document, SP_VERB_CONTEXT_GRADIENT,
_("Change gradient stop color"));
blocked = FALSE;
// Set the color in the selected stop after change
GtkWidget *combo_box = static_cast<GtkWidget *>(g_object_get_data(G_OBJECT(object), "combo_box"));
if (combo_box) {
GtkTreeIter iter;
if (gtk_combo_box_get_active_iter (GTK_COMBO_BOX(combo_box), &iter)) {
GtkListStore *store = GTK_LIST_STORE(gtk_combo_box_get_model(GTK_COMBO_BOX(combo_box)));
Inkscape::UI::Widget::ColorPreview *cp = Gtk::manage(new Inkscape::UI::Widget::ColorPreview(stop->get_rgba32()));
GdkPixbuf *pb = cp->toPixbuf(64, 16);
gtk_list_store_set (store, &iter, 0, pb, /*1, repr->attribute("id"),*/ 2, stop, -1);
}
}
}